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[APD] Re: Hagen CO2 natural plant system


I use two of them on my low energy 29.  I am still experimenting the with the 

Right now I add water up to the mark and then add 2/3 cup of sugar, 1/3 
teaspoon of yeast, and 1/3 teaspoon of baking soda.  This maintains the
CO2 level between 12 and 20, according to George Booth's chart.  The mixture 
continues to generate enough CO2 for 8 - 10 days, sometimes more.  I'm going 
to keep experimenting.

The plants are responding to the extra CO2, although not dramatically. 

I think the baking soda retards the yeast-sugar interaction, making it last 
longer.  I tried it without baking soda.  It started faster - more bubbles per 
minute - but it lasted only a few days.

Good luck!


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